Opinion/comments about L7 out the Z06 in a 2nd Gen?

Discussion in 'High Tech Retrofits' started by tazzz2, Nov 25, 2006.

  1. tazzz2

    tazzz2 Veteran Member Lifetime Gold Member

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    Jun 26, 2006
    Toronto
    Hi gang, I'm doing a winter resto-mod 72 project and am second guessing the final engine choice (been all over the map on engine choice so far and still split on the decission)

    I was currious if anyone has put a LS7 motor out of the new ZO6 vette in a second Gen car?????? If so how did the reto-fit go and are you happy with the swap out????? I'm currently running the original plain jane stock motor & block with a TKO 600 Tremec with a Lakewod scatter sheild in the car and would hope to re-utilize the scatter sheild to mate that to the LZ7 if possible?

    Any thoughts or comments would appreciated as I'm split at this point on doing a LS7 swap or having an Aluminum block custom built 572 stroker pump gas motor built (appreciating that the BB would require updating the scatter sheild for a 572). The biggest problem I see is feeding the 572 (carb motor) under a 2" cowl for clearance......I really don't want to have more than a 2" hood on the car.
    Thanks,
    Al
     
  2. schitzo

    schitzo Veteran Member

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    Feb 12, 2005
    Minneapolis MN
    ask the question over at Ls1tech.com as well . there are a few guys who have put LS7s in earlier cars. The only different thing from an ls1 swap is accomodating the dry sump oiling system and plumbing it.

    I guess it boils down to what you want when done and. Both are potent engines and involve different custom work to get them running right.
     
  3. BonzoHansen

    BonzoHansen Administrator Lifetime Gold Member

    Don't forget the $$$$$ :) What is list on a crate LS7, almost $14k?
     
  4. tazzz2

    tazzz2 Veteran Member Lifetime Gold Member

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    Jun 26, 2006
    Toronto
    Thanks Schitzo, I'll check it out over there too....
    LOL Bonzo, your right the LS7 was quoted to me as $14,500CDN and it's the cheaper option so far LOL....

    Seriously though, I like the thought of an old school big block cubic inches and a stroker in the car but have concerns about re-sale when I'm ready to part with the car.....Will the Aluminum 572 scare people off???? I've budgeted 17,000CDN for the motor purchase so I'm good either way....just wanted to canvass the board to see what motor would be most appealing to other 2nd Gen car owners......At this point, I'd assume the aluminum 572 would be the more unique setup as I haven't hear of anyone doing that combo in a sec gen resto mod car so far (not that I'm any kind of expert on this) and would be very interesting in the torque to weight ratios I'd imagine.....
     
  5. schitzo

    schitzo Veteran Member

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    Feb 12, 2005
    Minneapolis MN
    I didn't. he is debating between a LS7 and 572...obviously cost must not be much of a factor.

    as for which one would be more appealing for resale, I think a 2nd gen with a 572 would have better luck selling than one with a LS7. i.e at the moment....but might be different in the future.

    also, the 572 has more power and involves less electrical work if you go carb.
     
  6. tazzz2

    tazzz2 Veteran Member Lifetime Gold Member

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    Jun 26, 2006
    Toronto
    Thanks Schitzo, I'd agree with the interest in BB cars recently as well.....mind you the car handles so sweet with a small block setup.

    I think it'd be a carb motor, however, we (my builder & I) have discussed an injected motor too. He did however cautioned me in saying all it takes is a $30 sensor to fail and there goes a big dollar motor in the case of the injected route. Hood clearence is also a big question mark on the 572 with a 2" cowl.....guess time will tell what the final choice is as I'm more partial to the aluminum 572 idea as it stands.

    Anyone else care to toss in their thoughts on this one too?
     
  7. duece-bigalo01

    duece-bigalo01 Veteran Member

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    Apr 26, 2003
    Columbia Mo
    I would have to say go with the LS7. it is kinda a no brainer. big block torque and small block weight, revability, and economy. If you intend to keep the LS7 stock then I'm going to say a $30 sensor wont kill that motor. If you dont want to rely on sensors to prevent the motor from being destroyed run guages and keep an eye on them. I'm thinking here LS7 is going to be best bet but its not my money.:)
     
  8. tazzz2

    tazzz2 Veteran Member Lifetime Gold Member

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    Jun 26, 2006
    Toronto
    Duece......hear ya on the small block with big torque and the known factor on the LS7 motor are powerful reasons for it being consider between it and the 572...... Thanks for your imput.
     
  9. Aceshigh

    Aceshigh Veteran Member Lifetime Gold Member

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    Apr 9, 2001
    Boondocks
    This is a dream decision here.....hmmmm

    572 vs LS7. Tough call. :)
    Starting from scratch.....depends on what my purpose for the car was.
    Daily driver , would go LS7 all day long.
    Weekend strip toy, 572 all day long.

    When you start looking at the 572 you have to seriously consider a pretty damn strong tranny to withstand the torque without blowing it up I'd think.

    IIRC the LS7 gets only 13mpg in the city in the Z06.
    Which is 3200lbs and change.
    Throwing it in a 2nd gen probably decreases it a bit more.
    If it was me looking for an LS7 , I'd be on Ebay buying from a reputable reseller.
    Buying new is just too damn much money IMHO.
     
  10. tazzz2

    tazzz2 Veteran Member Lifetime Gold Member

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    Jun 26, 2006
    Toronto
    Thanks for the imput Aces....I plan to use the car as a daily driver in the summer months and the 572 motor would be built to run on pump gas if built. The tranny in the car is a Tremec TKO 600 and I was told by Keisler industries that it should be plenty good in either application. I'm not much of a drag strip person, so I'm building more of general use/road course kinda car (very limited exposure there as well...A couple of charity fund raising days up at Mosport and thinking of maybe doing the Hotrod Power Tour ) . The rear end gear is a 342 I believe,,, and the car currently has a stock small block (original #'s motor thats coming out and being put away) that currently rev's 2,000rpm at 70mph in 5th. With the current gearing I think mpg should be fairly ok for doing things like the power tour, but heck you know it'll never be that great with either choice I'd assume.
     
    Last edited: Nov 28, 2006

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